
You'd think that in an electronic age, accumulating a stack of paper work is utterly unnecessary, right? Heck no. A group of human computer interaction researchers from Canada have come up with a system dubbed DisplayStacks, which allows you to physically stack a bunch of flexible E Ink displays and make them interact with each other. Still not convinced? Check out the following for a live demonstration.
If you're interested in more details in how this works, you can download the research paper
over here (PDF).